Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5458188 | Air conditioning and refrigeration systems utilizing a cryogen and heat pipes | Roland L. Roehrich | 1995-10-17 |
| 5365744 | Air conditioning and refrigeration systems utilizing a cryogen | Roland L. Roehrich, Dale T. Johnson | 1994-11-22 |
| 5320167 | Air conditioning and refrigeration systems utilizing a cryogen and heat pipes | Dale T. Johnson, Roland L. Roehrich | 1994-06-14 |
| 5315840 | Air conditioning and refrigeration methods and apparatus utilizing a cryogen | Roland L. Roehrich | 1994-05-31 |
| 5311927 | Air conditioning and refrigeration apparatus utilizing a cryogen | David H. Taylor, Roland L. Roehrich | 1994-05-17 |
| 5305825 | Air conditioning and refrigeration apparatus utilizing a cryogen | Roland L. Roehrich, David H. Taylor | 1994-04-26 |
| 5287705 | Air conditioning and refrigeration systems utilizing a cryogen | Roland L. Roehrich | 1994-02-22 |
| 5285644 | Air conditioning and refrigeration apparatus utilizing a cryogen | Roland L. Roehrich | 1994-02-15 |
| 5267446 | Air conditioning and refrigeration systems utilizing a cryogen | Roland L. Roehrich | 1993-12-07 |
| 5267443 | Air conditioning and refrigeration methods and apparatus utilizing a cryogen | Roland L. Roehrich | 1993-12-07 |
| 5259198 | Air conditioning and refrigeration systems utilizing a cryogen | Roland L. Roehrich | 1993-11-09 |
| 5252874 | Electromagnetic clutch with torque isolation for return springs | — | 1993-10-12 |
| 5123257 | Transport refrigeration system | Lowell M. Anderson, Rodney H. Volk | 1992-06-23 |
| 4960088 | Low fuel shut-off system | Robert K. Havemann, Ricardo Spiro DeGrego | 1990-10-02 |
| 4922727 | Air delivery system for a transport refrigeration unit | — | 1990-05-08 |
| 4878360 | Air delivery system for a transport refrigeration unit | — | 1989-11-07 |
| 4770002 | Transport refrigeration system | Robert K. Havemann, Bruce E. McClellan | 1988-09-13 |
| 4635671 | Flow and pressure control valve system | — | 1987-01-13 |
| 4583377 | Refrigerant suction accumulator, especially for transport refrigeration unit | — | 1986-04-22 |
| D258233 | Cover for transport refrigeration unit | David H. Taylor, Rodney H. Volk | 1981-02-10 |
| D258234 | Cover for transport refrigeration unit | Lowell M. Anderson, William F. Arendt, Clarence F. Graser, Rodney H. Volk | 1981-02-10 |
| 4182134 | Transport refrigeration unit | Bruce D. Johnson, Rodney H. Volk | 1980-01-08 |